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GIHQPALMBR. Sewing Machine.

Patented April 26,1881.

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I s r: a s s E NPETERS, PHOTO LITHOGHAPKER, WASHINGTON D C UNITED STATESPATENT OFFICE.

CHARLES H. PALMER, OF NEW YORK, N. Y., ASSIGNOR TO THE PALMER STRAWSEWING MACHINE COMPANY, OF SAME PLACE.

SEWING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 240,758, dated April26, 1881, Application filed July 1, 1879.

To all whom it may concern Be it known that I, CHARLES H. PALMER, of NewYork city, in the State of New York, haveinvented certain new and usefulImprovements relating to Sewing-Machines, of which the following is aspecification.

The improved machine is intended more especially for sewing straw-braidor analogous narrow material, which is laid in a manner 1' 0 similar tostraw-braid,with each breadth partly superposed upon theadjoiningbreadth. I sew them with a straight needle thrusting directlythrough both breadths, using a single thread formed in loops by arevolving looper.

The improvements relate to the devices for pressing upon the work andguiding it.

The accompanying drawings form a part of this specification, andrepresent a machine constructed according to my improvements.

Figure l is a general perspective view of the entire machine incondition for work, certain parts of the gages and work-plate beingbroken away to show the parts beyond. Figs. 2, 3, and

A 4 are views of certain portions on a larger scale, being sectionsacross the braid near the point where the sewing is effected. Fig; 2 isa section on a line a little to the right of the center of thepresser-wheel. It shows only the braid and the safety-gage. Fig. 3 showsthe same 0 with some additional parts. Fig. 4 is a section in the planeof the center of the presser-wheel.

Similar letters of reference indicate like parts in all the figures.

A is the fixed frame-work, and A the goose- 3 5 neck or fixed armthereof, which supports the top mechanism.

B is the needle-bar, carrying a straight reciprocatin g needle, I).

D is the main shaft, and it carries a looper,

d, on the end nearest the needle. A tubular shaft, M, loosely surroundsit, and revolves in a tubular bearing, N, which is adjusted up and down,turning on an axis, a, and adjusted by a screw, 0.

On the back end of the tubular shaft M is a ratchet-wheel, m, whichserves to receive the motion. On the front end is a ratchet-wheel, m,which serves as a feed-wheel.

P is a lever vibrating loosely 011 the main 5o shaft D as a center. Onone end it carries a pawl, which engages with the ratchet m. To

the other end is connected a link, Q, which is attached to an adjustablepin, R, in a slotted arm, T fixed on a rocking shaft, T. The latterreceives a uniform rocking motion through a forked arm, T, from aneccentric, D on the main shaft, and communicates a greater or lessermotion to the feed, according as the pin R is adjusted nearer to orfartherfrom the shaft.

These parts represent the most approved connections for my improvements.

G is a presser-bar capable of moving vertically in its bearings, andcarrying a compound arm, G, which performs important functions. Apivot-screw, G in the side of the arm G formsa center for apresser-wheel, H, the form and functions of which will presently appear.A pin, G at the extremity of the arm G serves as a movable center forthe spring-lever I, which is pressed downward by a spring, I.

The presser-wheel H stands inclined. Its periphery is formed with atread, h, and a flange, h. The tread It bears on the edge of the upperfabric, or that already sewed. The flange h performs two functions. Itpresses on the straw-braid which is just being applied under the otherbraid previously sewed, and thus serves as a presser. That is onefunction. It serves also as a stop or guide, against which the edge ofthe upper piece of braid rests 011 being pressed laterally in the act offeeding. It thus serves as a guide. That is another function.

V is an inclined arm extending forward from the arm G and touching theedge of the work just in advance of its being carried under thepresser-wheel H. It aids to press down on the under braid a little; butits chief duty is to serve as an advance guide, to prevent the work frombeing carried too far in or back under the presser-wheel. It holds theedge rigidly outward to the proper line, so that even an unskillfuloperator cannot hold the work inclined so as to force it backward underthe flange of the presser-wheel. Being mounted on the arm G,it is raisedand lowered with the resser-wheel, and requires no attendance orthought. i

.The lever I presses fairly, but gently, on the upper face of the topbraid. It is formed with a stop, which prevents it from sinking too low;but it has sufficient range of motion to allow it to adapt itself to theordinary accidental variations in the thickness of the braid. Itsfulcrum is the pin G which is held by the screw g, on loosening whichitcan be adjusted forward and backward, and again set at will with theefiect to correspondingly set forward or backward the lever I.

Fis a spring, which urges down the presserbar G and its attachments.

. K is a sleeve surrounding the upper end of the presser-bar G, and isequipped with a handle, by which it may be partially revolved. Aninclined cam-groove, K, in one side receives an arm, G, from thepresser-bar, and by partially turnin the sleeve K the presserbar G andits attachments may be raised out of contact with the Work or loweredupon it,

subject to the tension of the spring F whenever required.

L is a rocking shaft lying parallel to the goose-neck A, and supportedthereon at each end. so thatit is free to rock. A rigid arm, L, at theback end of said shaft L receives the proper rcciprocatin g motion froma link, J, actuated by the eccentric m on the main shaft D. Another arm,L near the front is formed with a cylindrical hole, which receives aglobular piece, B, rigidly fixed on the side of the needle-bar B.-Through this train of parts the needle receives very rapid reciprocatingmotion.

It will be understood that the machine is provided with the properdevices for thread, tension, Ste.

Modifications may be made of the various parts. It is also obvious thatattachments, as hemmers, &c., may be used at will.

I provide for swinging the presser-wheel and all the accompanying partsout of the way by forcibly turning the sleeve K farther after it haslifted the parts to their full extent.

I attach especial importance to the form and functions of thepresser-wheel II It It and to the spring-presser I. YVhat I term thetread and flange ot' thepresser-wheel are so named from their analogy tothe parts of a railroadcar wheel which, are so named; but the tread isnarrower and the flange is much wider in proportion. The function of theflange will be readily understood. The tread h, when made in the form asnarrow and undecided as I prefer and have shown, does not beareffectively, in a proper sense, upon the edge of the upper braid, butaids the spring-presser I in holding the upper braid down. It fitsagainst and upon the extreme edge of the braid, and prevents the latterfrom being curled upward when the attendant, through neglect or want ofskill, crowds the work inward against the wheel.

The function of the lever I will be readily understood. It correspondsto an ordinary presser-foot of a sewing-machine. Its provision foryielding independently of the presserbar and of the accompanyingpresser-wheel is important, especially in passing the joints and buncheswhich occur at intervals in ordinary straw-braid. It is not essentialthat it be in the precise form shown. It may be a vertical slide, ifpreferred in any case, so long as it is adapted to aid the presser-wheelin holding down thework, as here shown.

I claim as my invention 1. The lever I and its actuating-spring 1, armG, and pin G in combination with the presscr-bar G, the spring F, andsleeve K, for holding and permitting the removal of the work,substantially as set forth.

2. The safety-guide V, in combination with the presser-wheel H, havingthe flange h, arm Gr, spring F, and presser-bar G, said guide V beingarranged as shown, so as to forcibly hold the sewed braid out from thelateral plane of the flange It on the'presser-wheel H, as specified.

In testimony whereof I have hereunto set

